What was found
DURING THE INCORPORATION OF AD2015-02-26 AND SUBSEQUENT SB-737-53-1244, IT WAS FOUND THAT AN ADDITIONAL PIVOT LINK HAS BEEN INSTALLED (DESIGNED BY BAY-SYS TECHNOLOGIES)AFTER THE AIRCRAFT OUTFTTING. THE FOLLOWING ENGINEERING INVESTIGATION ON THE AIRCRAFT CONFIGURATION HAS DETECTED A DAMAGE ON THE FLOOR BEAM TOP CHORD AT STA 520. THE CONCLUSION IS THE DAMAGE WAS CAUSED BY THE ADDITIONAL PIVOT LINK FORWARD LINKAGE TOUCHING THE BEAM DURING FLIGHT. THE DAMAGE HAS BEEN REWORKED I.A.W. SRM, HOWEVER REMAINS A POSSIBILITY THE PIVOT LINK WILL TOUCH AGAIN THE BEAM DURING NEXT FLIGHTS.